Industrial Instrument Technician - South Treatment Plant

Salary : $101,190.75 - $128,265.07 Annually
Location : South Treatment Plant - 1200 Monster Road SW, Renton, WA
Job Type: Career Service (Exec)
Job Number:
Department: DNRP-Natural Resources & Parks
Division: Wastewater Treatment
Opening Date: 09/22/2026
Closing Date: Continuous
FLSA: Non-Exempt
Bargaining Unit: A2 : SEIU L925-Wastewater
Full- or Part-Time: Full Time
Hours/Week: 40 hours/week

Summary
This position is open continuously until filled.

To ensure your application is given priority, please submit your materials by October 6, 2026, our first review date.
This recruitment will hire for 1 position. In addition to the current opening, this recruitment may be used to establish a pool of qualified candidates to fill future Industrial Instrument Technician at the South Treatment Plant Career Service vacancies within the Wastewater Treatment Division over the next 6 months.
About the Role
This position performs a variety of highly skilled journey-level work that is considered mission critical in the support of operations by constructing, troubleshooting, maintaining and conducting preventive maintenance programs on a wide variety of instrumentation and controls at a wastewater treatment facility, including all collection, pumping and regulating stations. This role, with a focus on SCADA programming and maintenance, works both independently and in collaboration with other instrument techs, skilled trades and plant operations staff. Our goal is to meet the NPDES, National Pollutant Discharge Elimination System, permit in the water treatment system. To ensure a safe work environment, our crew members use appropriate PPE and proper Lock-Out Tag Out procedures around electrical, mechanical, and environmental hazards. We also provide training in Permit-Required Confined Spaces. Our group supports many new Capital projects that update and replace our control systems and wastewater infrastructure.
About the Team
The Wastewater Treatment Division is committed to the principles of equity and social justice. We value diverse perspectives and life experiences in our workforce and are committed to building a culturally diverse and inclusive environment. WTD strives to provide equitable services to residents and businesses across King County. This is an opportunity to use your skills and expand your technical abilities working with a group of Instrument Techs and Electricians that support South Treatment plant, Carnation treatment plant, Vashon treatment plant as well as all the East section conveyance pump stations and regulators. We work in a fast-paced industrial environment with a large variety of systems and equipment that are critical to the success of our mission.

Job Duties
What You Will Be Doing:

• Perform preventative maintenance, modifications, upgrades, analysis, and diagnostics on DCS, SCADA, PLC's, SLC's, HMI'S, telemetry and networking with proprietary protocols. Apply electronic theory, digital electronics and PID control strategies.
• Troubleshoot, repair, calibrate, and maintain all electronic, pneumatic, and hydraulic instrumentation, control, and monitoring systems.
• Work with operations personnel, engineers, and suppliers to explain the function of processes and procedures needed for the operation of new equipment.
• Assist in inspection of instrumentation installed by contractors as well as witnessing and assessing loop commission testing. Review, modify and update drawings to conform with established plant standards.
• Make recommendations on purchasing spares and inventory requirements for all instrument related equipment.
• Review or modify shop drawings and process documentation to conform with established plant standards. Assistin inspection of instrumentation installed by contractors. Witness and assess loop commission testing.

Experience, Qualifications, Knowledge, Skills
Qualifications You Bring:

• Demonstrated work experience (three years) in a journey-level industrial instrumentation or related field.
• Knowledge of the application of physics and chemistry techniques and principles; Knowledge of the application of mathematical techniques and principles including algebra, trigonometry and geometry for performing duties of this classification.
• Knowledge of the installation, configuration, and maintenance of analyzers/sensors, control system computers, single loop controllers, signal converters, distributive and supervisory control systems, detection equipment/sensors, fuses, indicators, isolators, programmable logic controllers, pneumatic equipment, process control equipment, receivers, recorders, relays, rotameters, flow transmitters, level transmitters, pressure transmitters, temperature transmitters, signal conditioning equipment, small motors, switches, tachometer generator, thermocouples, Resistance Temperature Device (RTD's), transformers, control valves, pneumatic and electric actuators and positioners.
• Knowledge of Proportional Integral Derivative (PID) control loops including single loop controllers and configuration. Knowledge of soldering techniques and principles.
• Knowledge of the techniques necessary to analyze industrial processes for the design, modification, troubleshooting and repair of plant control instrumentation.
• Skill in utilizing a computer and associated software applications including word processing, spreadsheets, databases, single loop controller (SLC) and programmable logic controllers (PLC). Working knowledge of Supervisory Control and Data Acquisition (SCADA) and/or Distributed Control Systems (DCS) including networking and interconnect protocols.

Physical Requirement:

• Incumbents perform field work at a wastewater treatment plant and associated facilities and are required to lift and carry equipment weighing up to 50 pounds, use ladders.

Workplace Exposures:

• Outdoors environment during wet weather, confined space and maybe exposure to hazardous chemicals and noxious odors.

Competencies you bring: Tech Savvy: Anticipating and adopting innovations in business- building digital and technology applications.Collaborates: Building partnerships and working collaboratively with others to meet shared objectives.Decision Quality: Making good and timely decisions that keep the organization moving forward.Values Differences: Recognizing the value that different perspectives and cultures bring to an organization.Communicates Effectively: Developing and delivering multi-mode communications that convey a clear understanding of the unique needs of different audiences.
Ensures Accountability: Holding self and others accountable to meet commitments.

Racially Just: Identify and replace racists systems and structures with anti-racists and pro-equity approaches.
Required Licenses:

• A valid, unencumbered Washington State Driver's License.

It Would be Great if You Also Bring:

• Completion of a technical degree, apprenticeship, or equivalent training that clearly demonstrates journey-level instrumentation and control status
• Programming experience with Ovation DCS Controls
• Allen Bradley PLC and panel-view, programming experience
• Telemetry experience
• Device-NET experience
• Wastewater experience

Supplemental Information
Working Conditions:

• Work Location: South Treatment Plant, 1200 Monster Rd SW, Renton, WA 98057. Employees must reside in Washington state and within a reasonable distance to their King County worksite to respond to workplace reporting requirements.
• Work Schedule: This full-time position works a 40-hour work week with 4-10hr or 5-8hr schedule options available. This position is overtime eligible. This position requires the ability to work all shift schedules and to report to work during adverse and inclement weather conditions and be on a rotating call list upon completion of a 9-month probationary period. This position is covered under the provisions of the Fair Labor Standards Act (FLSA) and is overtime eligible.
• Union Representation: This position is represented by SEIU Local 925.
• Physical Requirement: Incumbents perform field work at a wastewater treatment plant and associated facilities and are required to lift and carry equipment weighing up to 50 pounds, use ladders, and there is exposure to hazardous chemicals and noxious odors. A pre-employment physical and reference checks will be conducted prior to any final job offer.

Application Instructions:

We welcome applications from all qualified applicants. We value diversity, diverse perspectives and life experience and encourage people of all backgrounds to apply.

Application materials will be screened for clarity, completeness and alignment with the experience, qualifications, knowledge, and skills essential for this role to determine which candidates may be invited to participate in one or more panel interviews.

Anticipated Timeline for this recruitment: (subject to change)

• Technical Assessment: week of October 19th, 2026 (tentative)
• Interviews: week of October 26th, 2026 (tentative)

To apply, submit a:

• Complete Application (Required)
• Resume (Required)
• Cover Letter (Required)
• Responses to the supplemental questions (Required)

Note: Additional documents won't be considered during minimum qualification screening.Discover More About the Wastewater Treatment Division: Visit our websiteand check us out at Facebook,,, YouTube and our WTD Blog

Discover More about DNRP: Visit our website, explore an interactive map of our recent accomplishments and check us out at Facebook, (formerly Twitter), LinkedIn, TikTok, Instagram, YouTubeand Keeping King County Green News

Sign up for to be notified of additional career opportunities with King County. Select the Natural Resources category for DNRP opportunities and explore other categories of interest.

Are you ready to make a difference? dedicated to serving one of the nation's best places to live, work and play.

Are you ready to make a difference dedicated to serving one of the nation's best places to live, work and play.

Application Process

If you are interested in pursuing this position and supporting King County's vision for unified, equitable, and high-performing government, please follow the application instructions carefully. Provide us with your work history as applicable, ensuring that you provide details that highlight your ability to fulfill the requirements for this position.

If you need this announcement in an alternate language or format, or you would like to request accommodation or assistance in the application or assessment process, please contact Emiliya Makaryan at